About this document​

Scope and purpose​

The Infineon AIROC™

CYW55913

Wi-Fi and Bluetooth® Low Energy (LE) connected MCU Evaluation Kit (

CYW955913EVK-01

) enables the evaluation, prototyping, and development of a wide array of Internet of Things (IoT) applications using the AIROC™

CYW55913

, ultra-low-power, single-chip, connected MCU that support 1x1 Wi-Fi 6/6E, Bluetooth® LE 5.4, Matter, IP networking, with integrated PMU, targeted at IoT applications for standalone operation or to offload a host-processor. An integrated 192 MHz Arm® Cortex®-CM33 runs the Wi-Fi and Networking Stacks, Bluetooth® LE 5.4 and supports a wide array of peripherals.

The integrated Arm® Cortex®-CM33 can operate up to 192 MHz, supporting:

  • 2048 KB of ROM and 768 KB of SRAM

  • Three Serial Control Blocks (SCB) and supporting I2C/SPI/UART

  • 9x TCPWM blocks

  • PDM interface for digital microphone support

  • 12-bit ADC with seven-channel mux input for analog microphone support or seven channels of DC sensing

  • A pair of time-division multiplexing (TDM) interfaces enables a flexible interface for various audio use cases

  • 4-wire UART or SDIO (shared with Wi-Fi) interface is available for interfacing with the host processor

Intended audience​

The target audience for this evaluation board comprises technical specialists with expertise in connectivity, particularly those interested in Wi-Fi® and Bluetooth® LE development with connected MCU. Its intended usage is within laboratory conditions.

Important notice​

“Evaluation Boards and Reference Boards” shall mean products embedded on a printed circuit board (PCB) for demonstration and/or evaluation purposes, which include, without limitation, demonstration, reference and evaluation boards, kits and design (collectively referred to as “Reference Board”).

Environmental conditions have been considered in the design of the Evaluation Boards and Reference Boards provided by Infineon Technologies. The design of the Evaluation Boards and Reference Boards has been tested by Infineon Technologies only as described in this document. The design is not qualified in terms of safety requirements, manufacturing and operation over the entire operating temperature range or lifetime.

The Evaluation Boards and Reference Boards provided by Infineon Technologies are subject to functional testing only under typical load conditions. Evaluation Boards and Reference Boards are not subject to the same procedures as regular products regarding returned material analysis (RMA), process change notification (PCN) and product discontinuation (PD).

Evaluation Boards and Reference Boards are not commercialized products, and are solely intended for evaluation and testing purposes. In particular, they shall not be used for reliability testing or production. The Evaluation Boards and Reference Boards may therefore not comply with CE or similar standards (including but not limited to the EMC Directive 2004/EC/108 and the EMC Act) and may not fulfill other requirements of the country in which they are operated by the customer. The customer shall ensure that all Evaluation Boards and Reference Boards will be handled in a way which is compliant with the relevant requirements and standards of the country in which they are operated.

The Evaluation Boards and Reference Boards as well as the information provided in this document are addressed only to qualified and skilled technical staff, for laboratory usage, and shall be used and managed according to the terms and conditions set forth in this document and in other related documentation supplied with the respective Evaluation Board or Reference Board.

It is the responsibility of the customer’s technical departments to evaluate the suitability of the Evaluation Boards and Reference Boards for the intended application, and to evaluate the completeness and correctness of the information provided in this document with respect to such application.

The customer is obliged to ensure that the use of the Evaluation Boards and Reference Boards does not cause any harm to persons or third party property.

The Evaluation Boards and Reference Boards and any information in this document is provided "as is" and Infineon Technologies disclaims any warranties, express or implied, including but not limited to warranties of non-infringement of third party rights and implied warranties of fitness for any purpose, or for merchantability.

Infineon Technologies shall not be responsible for any damages resulting from the use of the Evaluation Boards and Reference Boards and/or from any information provided in this document. The customer is obliged to defend, indemnify and hold Infineon Technologies harmless from and against any claims or damages arising out of or resulting from any use thereof.

Infineon Technologies reserves the right to modify this document and/or any information provided herein at any time without further notice.

Safety precautions​

Note: Please note the following warnings regarding the hazards associated with development systems

Table 1. Safety precautions



Caution:

The evaluation or reference board contains parts and assemblies sensitive to electrostatic discharge (ESD). Electrostatic control precautions are required when installing, testing, servicing or repairing the assembly. Component damage may result if ESD control procedures are not followed. If you are not familiar with electrostatic control procedures, refer to the applicable ESD protection handbooks and guidelines.

Introduction​

Infineon AIROC™

CYW55913

Evaluation Kit (CYW955913EVK-01) enables the evaluation, prototyping, and development of a wide array of Internet of Things (IoT) applications using the AIROC™

CYW55913

, ultra-low-power, single-chip, and connected MCU.

The Infineon

CYW55913

/55912/55911/55903/55902/55901 are a family of ultra-low-power, single-chip, connected MCUs that support 1x1 Wi-Fi 6/6E, Bluetooth® Low Energy 5.4, Matter, IP networking, with integrated PMU, targeted at IoT applications for standalone operation or to offload a host-processor. An integrated 192 MHz Arm® Cortex®-CM33 runs the Wi-Fi and Networking Stacks, Bluetooth® LE 5.4 and supports a wide array of peripherals.

CYW955913EVK-01, ModusToolbox™ software, and tools form a powerful but easy-to-use toolset that helps the users to create Wi-Fi and Bluetooth® enabled IoT solutions. The CYW955913EVK-01 offers footprint compatibility with Arduino shields. The development environment is compatible with Windows, macOS, and Linux operating systems. In addition, the kit features an onboard programmer/debugger (KitProg3).

Note: This kit ModusToolbox™ software 3.2 or later.

To order the Evaluation Kit (EVK), reach out to Infineon's sales team.

Kit contents​

This evaluation kit box includes the following:

  • CYW55913 Evaluation Board (CYW9CPM2BASE1 + CYW955913SDCM2WLIPA)

  • 30-pin FFC cable with M.2 Adapter Card

  • USB Type-C to Type-C cable

  • Six jumper wires, each five inches in length

  • Two Laird Triband PCB Antenna

  • Quick start guide

Figure 1.

CYW955913EVK-01

kit contents


Figure 1

shows

CYW955913EVK-01

kit contents. Inspect the kit contents. If you find any part missing, contact your nearest Infineon sales office for assistance:

www.infineon.com/support

.

Kit details​

Figure 1

shows

CYW955913EVK-01

with the following features:

  • CYW55913 M.2 carrier module with antenna connectors

  • Expansion headers compatible with Arduino shields

  • Supports 1.8 V, 3.3 V, and 5 V operation of Arduino shields

  • Reset button (black) and User button (white)

  • Onboard USB Type-C connector (J6) for powering, programming, and debugging purposes

Follow these steps before connecting the board and verifying the driver installation:

  1. Verify that all the jumpers are in the default configuration, as shown in Table 3 to Table 6 , so that the peripheral UART is selected and can display embedded application trace messages. Figure 2 shows the default jumper locations.

  2. Connect the USB connector (J6) of the EVK to the development PC with the provided Type-C USB cable. The USB UART driver loads automatically. If the EVK is not detected as a USB device, reinstall the USB UART driver in the following ModusToolbox™ installation directory:

    • Windows and macOS:

      <install>\tools_3.2\driver_media\dpinst

    • Linux:

      <install>\tools_3.2 \driver_media\install_driver\dpinst

Figure 2.

CYW955913EVK-01

default jumper settings



Figure 3

highlights the LEDs provided on

CYW955913EVK-01

:

  • LED D1 (Yellow) indicates that input power is ON.

  • LED D2 (Yellow) indicates KitProg3 status.

  • LED D3 (Red) and LED D4 (Orange) are generic user LEDs controlled by GPIOs. A label on the back of the kit provides the pin mapping.

Figure 3.

CYW955913EVK-01

LEDs



Getting started​

This user guide helps you find the details of the

CYW955913EVK-01

kit:

  • The Kit operation chapter describes the operation of the kit and the utility of its various features.

  • The Hardware chapter describes the design details of the CYW955913EVK-01 hardware blocks.

Perform the following steps to get started with the out of the box experience of the CYW955913EVK-01 Kit.

  1. Before you start, ensure that you have the following:

    • PC with Type-C USB port

    • UART terminal soft¬ware such as TeraTerm or Minicom

  2. Connect the Triband PCB antenna to the UFL connectors J3 (WL Main) and J2 (WL AUX) on the M.2 radio card

  3. Ensure that the jumper and switch settings on the board are configured as shown in Table 2 to Table 7

  4. Connect the KitProg3 USB Type-C connector (J6) to your PC

  5. Wait for the driver installation to complete

    Figure 4.

    CYW955913EVK-01 Antenna connection


  6. Open the UART terminal software and connect to the kit’s Peripheral UART COM port with the following settings:

    • Baud rate: 115200

    • Data: 8 bit

    • Parity: None

    • Stop bit : 1 bit

    • Flow control: None

  7. Press the Reset button (SW2) and follow the instructions displayed on the UART terminal to use the pre-programmed code example

    Figure 5.

    USB-UART COM port setup



ModusToolbox™ software​

ModusToolbox™

is a free software development ecosystem that includes the Eclipse IDE for ModusToolbox™, AIROC™ BTSTACK, Bluetooth® SDK, and Wi-Fi SDK to develop applications for Infineon IoT products. Eclipse IDE for ModusToolbox™ is a multi-platform, integrated development environment (IDE) used to create new applications, update application code, change middleware settings, and program or debug applications.

Using ModusToolbox™, you can enable and configure device resources and middleware libraries, write C source code, and program and debug the device. The build system infrastructure includes the new project creation wizard that can run independently of the Eclipse IDE, the make infrastructure, and other tools. This means you can choose your compiler, RTOS, and ecosystem without compromising usability or access to our industry-leading AIROC™ Wi-Fi and Bluetooth®, CAPSENSE™ Human Machine Interface (HMI), security, and various other features.

For more details on ModusToolbox™ installation and usage, see the

Eclipse IDE for ModusToolbox™ user guide

.

ModusToolbox™ help​

Launch ModusToolbox™ and navigate to the following items for help documentation:

  • Quick Start Guide : Choose Help > Eclipse IDE for ModusToolbox™ Documentation > Quick Start Guide . This guide gives you the basics of using ModusToolbox™.

  • ModusToolbox™ General Documentation : Choose Help > ModusToolbox™ General Documentation > ModusToolbox™ Documentation Index . This page provides links to various ModusToolbox™ documents.

  • ModusToolbox™ User Guide : Choose Help > Eclipse IDE for ModusToolbox™ Documentation > User Guide . This is a comprehensive guide for creating, building, and programming ModusToolbox™ applications.

Update programmer serial number for CYW55913​

Programming an application onto a CYW55913 device is done through the UART interface. If there are two or more serial ports connected to your computer, add "UART=COMXX" (or "UART=/dev/ttyXX" for Linux or macOS) to the application Makefile. Replace XX with the appropriate UART number that is attached to the kit. For example:

UART=COM16

IoT resources and technical support​

Infineon provides a wealth of product documentation at the

Wireless Connectivity

webpage to help you select the right IoT device for your design. Additionally,

Infineon Developer Community

offers a platform for developers to access the latest software and tools, solving common evaluation and integration problems while directly interacting with both Infineon engineers and experienced peers.

Kit operation​

This section provides detailed instructions to setup the Infineon

CYW955913EVK-01

with Infineon ModusToolbox™ for Wi-Fi and Bluetooth® LE combo applications with a connected MCU. It introduces

CYW955913EVK-01

and the features that are used as part of the kit's operation. Also, discusses the features such as Wi-Fi and Bluetooth® connectivity, MCU capabilities, programming/debugging, and a USB-UART bridge device that can be used to communicate with the

CYW55913

device on this EVK.

Theory of operation​

CYW955913EVK-01

is built around the

CYW55913

device.

Figure 6

shows the block diagram of the

CYW55913

device. See the device

datasheet

for more details on device features.

Figure 6.

CYW55913

block diagram



Figure 7

illustrates the block diagram of

CYW955913EVK-01

. This board contains a

CYW55913

Wi-Fi and Bluetooth® LE-connected MCU and a USB-to-serial interface/programmer. The kit features Arduino form-factor-compatible headers, which enable Arduino shields to be plugged in, extending the EVK's capabilities. It also features one user button, a recovery button, a reset button, two user LEDs, a potentiometer, an ambient light sensor, an AMIC, and two DMICs.

Figure 7.

CYW955913EVK-01

block diagram



Figure 8

and

Figure 9

show the markup of the

CYW955913EVK-01

.

Figure 8.

CYW955913EVK-01

(top view)



Figure 9.

CYW955913EVK-01

(bottom view)



The following are the descriptions of the numbered items in

Figure 8

:

  1. Power indicator LED (D1) : This LED is used to indicate the status of power supplied to the board.

  2. KitProg3 status LED (D2) : This yellow LED indicates the status of KitProg3.

  3. KitProg3 USB Type-C connector (J6) : J6 is a Type-C USB female connector for connecting the kit to the PC using the provided USB Type-C cable. It is used for powering the board, programming, and USB-UART communication.

  4. KitProg3 programming mode selection button (SW3) : In this kit, by default, it supports Dual-UART mode. The button connects the PSOC™ 5LP Mode select pin to the ground when pressed. To interchange between Single-UART and Dual-UART mode, press and hold SW3 for 2 seconds. For more details, refer to the KitProg3 user guide .

  5. KitProg3 (PSOC™ 5LP) programmer and debugger (CY8C5868LTI-LP039, U4) : The PSOC™ 5LP (CY8C5868LTI-LP039) serving as KitProg3, is a multi-functional system that includes a JTAG debugger, a USB-I2C bridge, and a Dual USB-to-UART bridge. For more details, see the KitProg3 user guide .

  6. VIOREF voltage selection jumper (J20) : This jumper is used to select the VIOREF (Arduino shield IO supply) power source. The possible selections are 1.8 V, 3.3 V, or 5.0 V.

  7. External power supply VIN connector (J7) : This is an optional power supply DC jack that support 12 V and 1 A to power the board.

  8. CYW55913 user button (SW4) : This button can be used to provide input to the CYW55913 device. Note that the button connects the CYW55913 pin to the ground when pressed; therefore, the CYW55913 pin must be configured as a digital input with a resistive pull-up for detecting the button press.

  9. LED enable/disable switch (SW5) : This switch is used to enable or disable the user LEDs by connecting or disconnecting GPIOs from CYW55913 .

  10. Analog mic (U13) : It can be used to configure the kit as a voice remote.

  11. Power header compatible with Arduino Uno R3(J1) : The Arduino-compatible I/O header brings out power and reference voltage pins from the base board to interface with Arduino shields.

  12. Potentiometer connection jumper (J10) : This jumper can be used to connect or disconnect the on-board potentiometer from the CYW55913 device.

  13. Potentiometer (R1) : This enables the kit to demonstrate the analog input capability of the CYW55913 chip.

  14. Arduino ADC/SPI selection switch : This DPDT switch is used to select between the connection of GPIO from CYW55913 to Arduino headers.

  15. Analog-IN header compatible with Arduino Uno R3 with Extended TDM2 interface (J2) : The Arduino-compatible I/O header brings out analog-capable pins and Audio TDM2 interface from CYW55913 to interface with Arduino shields.

  16. CYW55913 user LEDs (D3, D4) : These onboard LEDs can be controlled by the CYW55913 device. The LEDs are ACTIVE LOW; therefore, these pins must be driven low to turn ON the LEDs.

  17. Digital mic 1 (U11) : The digital microphone ASIC contains an extremely low-noise preamplifier and a high-performance sigma-delta ADC. It can be used to configure the kit as a voice remote.

  18. CYW55913 reset button (SW2) : This button can be used to reset the device.

  19. CYW55913 recovery button (SW1) : This button can be used to force the device to recovery mode.

  20. VBAT current measurement jumper (J14) : This jumper is used to power the M.2 carrier module. Remove this jumper and connect an ammeter across the two pins of J14 to measure the current consumption by the M.2 carrier module.

  21. Bluetooth® section disable jumper(J17) : This jumper is used to enable/disable BT subsystem of the device.

  22. WLAN section disable jumper (J16) : This jumper is used to enable/disable WLAN subsystem of the device.

  23. M.2 stand-off (MT1) : Stand-off to connect the M.2 carrier module.

  24. CYW55913 (U1) : AIROC™ Wi-Fi and Bluetooth® LE connected MCU with Wi-Fi 6 and Bluetooth® LE 5.4 support is the heart of the kit.

  25. M.2 E-key interface connector (J13) : This is used to interface Infineon custom Wi-Fi and Bluetooth® LE connected MCU M.2 carrier boards to this kit.

  26. Ambient light sensor (U10) : On-board digital ambient light sensor can be used to sense the ambient light intensity and provide the data to the CYW55913 device via I2C.

  27. Digital mic 2 (U12) : Second digital PDM mic on board enables the stereo audio input functionality.

  28. External host platform interface connector (J21) : This 30-pin connector enables the CYW55913 device to connect to other host platforms.

  29. TDM1 interface connector (J5) : This connector exposes the audio TDM1 interface of the CYW55913 device.

  30. Digital I/O headers compatible with Arduino Uno R3 (J3,J4) : The Arduino-compatible I/O header brings out pins from CYW55913 to interface with Arduino shields.

  31. 10-pin JTAG/COEX header (J9) : Optional (not mounted) header to access the JTAG/COEX interface of the device.

  32. 6-pin Bluetooth® UART header(J22) : Optional (not mounted) header to access BT UART interface of the device.

Jumpers​

Table 2

to

Table 6

list the jumper settings on the

CYW955913EVK-01

.

Table 2. Baseboard jumper J14 pin configuration

Baseboard Jumper J14 (VBAT current measurement)

Default state

Connection on CYW55913

Description

1 and 2

Shorted

VBAT

Short this jumper to supply power to the VBAT of CYW55913 . In addition, use this jumper to measure the current consumption of the VBAT domain.

Table 3. Baseboard jumper J16 pin configuration

Baseboard jumper J16 (WLAN Disable)

Default state

Connection on CYW55913

Description

1 and 2

Open

NA

Short this jumper to disable the WLAN section of the radio module on the M.2 carrier board.

Note:

This jumper can be used for radio modules other thanCYW55913as WL_REG_ON is not exposed on this device.

Table 4. Baseboard jumper J17 pin configuration

Baseboard jumper J17 (BT Disable)

Default state

Connection on CYW55913

Description

1 and 2

Open

REG_ON

Short this jumper to disable the BT subsystem of the CYW55913 device.

Note:

Shorting this jumper disables both the BT and WL subsystem on the CYW55913 device, as both Reg_ON pins are tied together.

Table 5. Baseboard jumper J10 pin configuration

Baseboard jumper J10 (Potentiometer enable)

Default state

Connection on

CYW55913

Description

1 and 2

1-2

LHL_GPIO_8

Short this jumper to connect the onboard potentiometer to

CYW55913

.

Table 6. Baseboard jumper J20 pin configuration

Baseboard jumper J20 (Arduino header VIOREF select)

Default state

Connection on

CYW55913

Description

1 and 3

Open

NA

Short these pins to supply 3.3 V to the VIOREF of the Arduino header.

3 and 4

Open

Short these pins to supply 5.0 V to the VIOREF of the Arduino header.

3 and 5

Shorted

Short these pins to supply 1.8 V to the VIOREF of the Arduino header.

Buttons and switches​

Table 7

lists the buttons and switches on the

CYW955913EVK-01

.

Table 7. Baseboard button/switch functionality

Baseboard buttons/switch

Pressed state

Connection on

CYW55913

Description

SW1

GND

BT_UART_CTS

Active low recovery button (black)

SW2

GND

BT_REG_ON

Active low reset button (black)

SW3

GND

NA

Switch to change the KP3 mode

SW4

GND

BT_GPIO_4

User application button (white)

SW5

NA

BT_GPIO_16

BT_GPIO_17

User LED1 and User LED2 enable/disable switch

SW6

NA

LHL_GPIO_8

LHL_GPIO_9

Arduino GPIO ADC/SPI selection switch

Arduino-compatible headers​

J1, J2, J3, J4, and J5 are Arduino shield-compatible headers.

Table 8. Header J1 pin configuration

Header J1

Arduino compatible pin

Connection on

CYW55913

Description

1

VIN

NA

Input supply (5 V - 12 V) option to the kit from the Arduino shield

2

GND

GND

Ground

3

GND

GND

Ground

4

5V0

NA

5 V supply output to the Arduino shield

5

3V3

NA

3.3 V supply output to the Arduino shield

6

RESET

NA

Arduino shield reset from KP3

7

VIOREF

NA

I/O reference pin used by shields to determine the I/O voltage. It can be changed to 1.8 V, 3.3 V, and 5 V with J20 configuration.

8

NC

NC

No connect

Table 9. Header J2 pin configuration

Header J2

Arduino compatible pin

Connection on

CYW55913

Description

1

A0

LHL_GPIO_4

LHL GPIO

2

NA

TDM2_WS

TDM2 interface word select

3

A1

LHL_GPIO_5

LHL GPIO

4

NA

TDM2_SDO

TDM2 interface data out

5

A2

LHL_GPIO_8

LHL GPIO

6

NA

TDM2_SDI

TDM2 interface data in

7

A3

LHL_GPIO_9

LHL GPIO

8

NA

TDM2_SCK

TDM2 interface slave clock

9

NC

NA

No connect

10

NC

NA

No connect

11

NC

NA

No connect

12

NC

NA

No connect

13

NC

NA

No connect

14

NA

TDM2_MCK

TDM2 interface master clock

15

NC

NA

No connect

16

GND

GND

Ground

Table 10. Header J3 pin configuration

Header J3

Arduino compatible pin

Connection on

CYW55913

Description

1

D8

NC

No Connect

2

D9

BT_GPIO_2

BT GPIO

3

D10

BT_GPIO_16

BT_GPIO

4

D11

LHL_GPIO_8

LHL GPIO

5

D12

LHL_GPIO_9

LHL GPIO

6

D13

BT_GPIO_17

BT GPIO

7

GND

GND

Ground

8

NC

NC

No connect

9

SDA

BT_GPIO_6

BT GPIO

10

SCL

BT_GPIO_7

BT GPIO

Table 11. Header J4 pin configuration

Header J4

Arduino compatible pin

Connection on

CYW55913

Description

1

D0

LHL_GPIO_3

LHL GPIO

2

D1

LHL_GPIO_2

LHL GPIO

3

D2

BT_GPIO_3

BT GPIO

4

D3

NC

No connect

5

D4

BT_GPIO_4

BT GPIO

6

D5

LHL_GPIO_6

LHL_GPIO

7

D6

BT_GPIO_0

BT GPIO

8

D7

BT_GPIO_5

BT GPIO

Table 12. Header J5 pin configuration

Header J5

Arduino compatible pin

Connection on

CYW55913

Description

1

NA

GND

Ground

2

NA

TDM1_MCK

TDM1 interface master clock

3

NA

WL_DEV_WAKE

WLAN device wake

4

NA

BT_DEV_WAKE

Bluetooth® device wake

5

NA

TDM1_SCK

TDM1 interface slave clock

6

NA

TDM1_DI

TDM1 interface data in

7

NA

TDM1_DO

TDM1 interface data out

8

NA

TDM1_WS

TDM1 interface word select

Note: The J5 header and even pins of the J2 header are not compatible with standard Arduino pinout and are compatible with the custom audio codec shield from Infineon for the BT audio support.

Other headers​

J9 is the JTAG/COEX header, which brings out the WL GPIOs of the

CYW55913

device (not mounted by default; see the

Kit reworks

chapter for use).

Table 13. Header J9 pin configuration

Header J9

Pin name

Connection on

CYW55913

Description

1

VDDIO_1V8

NA

1.8 V supply to the external debugger

2

TMS

GPIO_3

WL GPIO

3

GND

GND

Ground

4

TCK

GPIO_2

WL GPIO

5

GND

GND

Ground

6

TDO

GPIO_5

WL GPIO

7

GND

GND

Ground

8

TDI

GPIO_4

WL GPIO

9

GND

GND

Ground

10

TRST

GPIO_6

WL GPIO

J22 is a UART programming header using an external device that brings out the HCI UART pins of the

CYW55913

device (not mounted by default; see the

Kit reworks

chapter for use).

Table 14. Header J22 pin configuration

Header J22

Pin name

Connection on

CYW55913

Description

1

GND

GND

Ground

2

UART_RTS

BT_UART_RTS_N

UART request-to-send. Active-low request-to-send signal for the HCI UART interface.

3

VCC_3V3

NA

3.3 V supply

4

UART_RXD

BT_UART_RXD

UART serial input. Serial data input for the HCI UART interface.

5

UART_TXD

BT_UART_TXD

UART serial output. Serial data output for the HCI UART interface.

6

UART_CTS

BT_UART_CTS_N

UART clear-to-send. Active-low clear-to-send signal for the HCI UART interface.

J21 is the 30-pin external host interface connector that enables the kit to connect the

CYW55913

device to other host platforms via the FFC-M.2 adapter card. See the

Kit reworks

chapter to use this connector.

Table 15. Header J21 pin configuration

Header J21

Pin name

Connection on

CYW55913

Description

1

EX_LHL_GPIO_3/UART_RXD

LHL_GPIO_3

LHL GPIO

2

EX_LHL_GPIO_2/UART_TXD

LHL_GPIO_2

LHL_GPIO

3

WL_DEV_WAKE_M2

WL_DEV_WAKE

WLAN device wake

4

EX_LHL_GPIO_5/UART_RTS

LHL_GPIO_5

LHL GPIO

5

BT_GPIO_7

BT_GPIO_7

BT GPIO

6

BT_GPIO_6

BT_GPIO_6

BT GPIO

7

WL_REG_ON_M2

WL_REG_ON

Enable it for WLAN section power supply. Not used in the

CYW55913

device, connected to GND on the device side.

8

BT_REG_ON_M2

BT_REG_ON

Used by the PMU to power on or power off the internal

CYW55913

regulators used by the Bluetooth® section.

9

EX_LPO_IN_3V3

LPO_IN_OUT

LPO clock input from external host board

10

BT_DEV_WAKE_M2

BT_DEV_WAKE

Bluetooth® device wake

11

GND

GND

Ground

12

EX_BT_UART_CTS

BT_UART_CTS_N

UART clear-to-send. Active-low clear-to-send signal for the HCI UART interface.

13

EX_BT_UART_RTS

BT_UART_RTS_N

UART request-to-send. Active-low request-to-send signal for the HCI UART interface.

14

EX_BT_UART_RXD

BT_UART_RXD

UART serial input. Serial data input for the HCI UART interface.

15

EX_BT_UART_TXD

BT_UART_TXD

UART serial output. Serial data output for the HCI UART interface.

16

GND

GND

Ground

17

BT_HOST_WAKE_M2

BT_HOST_WAKE

Bluetooth® host wake

18

GPIO0_WL_HOST_WAKE_M2

GPIO_0

WLAN host wake

19

GND

GND

Ground

20

EX_TDM2_DI

TDM2_DI

TDM2 interface data in

21

EX_TDM2_DO

TDM2_DO

TDM2 interface data out

22

EX_TDM2_WS

TDM2_WS

TDM2 interface word select

23

EX_TDM2_SCK

TDM2_SCK

TDM2 interface slave clock

24

GND

GND

Ground

25

EXT_SDIO_DATA3

SDIO_DATA_3

SDIO data line 3

26

EXT_SDIO_DATA2

SDIO_DATA_2

SDIO data line 2

27

EXT_SDIO_DATA1

SDIO_DATA_1

SDIO data line 1

28

EXT_SDIO_DATA0

SDIO_DATA_0

SDIO data line 0

29

EXT_SDIO_CMD

SDIO_CMD

SDIO command line

30

EXT_SDIO_CLK

SDIO_CLK

SDIO clock input

USB serial interface chip​

A CY8C5868LTI-LP039 PSOC™ 5LP chip is used for onboard programming and USB-serial functionality. It connects the kit to the PC over a USB interface and to the

CYW55913

device through the HCI, peripheral UARTs, and I2C pins. Optional SPI and JTAG connectivity are also supported by this chip.

Kit power supply​

The

CYW955913EVK-01

kit can be powered with the following power inputs:

  • USB Type-C connector (J6)

  • 5 V - 12 V, 1 A DC jack (J7)

  • VIN pin of the J1 header (J1.1)

The input supply is provided to the buck regulator to generate 3.3 V for the VBAT supply of the device, and from the same 3.3 V; for the peripherals, 1.8 V is generated using an LDO. For more details about the power regulators, see the

Hardware

section.

Test points​

There are three ground test points for easy connection of probes.

Table 16

lists voltage at various domains that can be measured from their respective test points on the baseboard.

Table 16. Test points in CYW955913EVK-01

Label

Description

TP1, TP3, TP5

Ground

TP2

Input supply test point, VCC_IN

TP4

3.3 V rail test point, VCC_3V3

TP6

1.8 V rail test point, VCC_1V8

TP7

P5LP supply test point, P5LP_VDD

Current measurement​

CYW955913EVK-01

has a VBAT (3.3 V) power domain to power the

CYW55913

device. Current consumption of the M.2 carrier module with the

CYW55913

device can be found out from the current consumed by the VBAT domain.

Note: To measure the current consumed by the VBAT domain, connect an ammeter across pin 1 and pin 2 of the jumper J14 on the baseboard.

Pin configuration​

GPIOs on the

CYW55913

device can be multiplexed to various peripherals. For more information on the peripherals that can be routed to the various GPIOs; see the device

datasheet

.

For this board, the ModusToolbox™ initializes GPIOs to the platform’s default configuration.

Hardware​

This section describes the

CYW955913EVK-01

kit hardware and its different blocks, such as the power supply, reset control, Arduino-compatible headers, other connectors, and peripherals. This kit consists of two boards: a baseboard with all peripherals and interconnect options and an M.2 carrier module with the

CYW55913

device .

See the

CYW955913EVK-01

kit

webpage

for schematics and design files of

the baseboard, and M.2 carrier module

.

M.2 carrier module​

The baseboard design of the

CYW955913EVK-01

board is designed to be modular so that different carrier modules can be used with the same baseboard. In this kit, the

CYW955913SCM2WLIPA

M.2 carrier radio module, which employs the

CYW55913

device, is connected to the baseboard through the M.2 interface.

The carrier module interface is a generic interface used across many devices. See

device I/O mapping

for a detailed interface description. SDIO, UART signals, and GPIOs are moved out from module pins to interface with the baseboard.

CYW55913 device​

CYW55913 is the heart of the kit, which is an ultra-low-power, single-chip, connected MCU that supports 1x1 Wi-Fi 6/6E, Bluetooth® LE 5.4, Matter, IP networking, with integrated PMU, targeted at Internet of Things (IoT) applications for standalone operation or to offload a host-processor.

An integrated 192 MHz Arm® Cortex®-CM33 runs the Wi-Fi and Networking Stacks, Bluetooth® LE 5.4, and supports a wide array of peripherals. The CYW55913/55912/55911/55903/55902/55901 operates over the -40°C to +85°C temperature range and is available in a 0.35 mm pitch WLBGA package.

Figure 10.

CYW55913 system



CYW55913 device powered from VBAT 3.3 V and VDDIO 1.8 V. All sections are powered from the internally generated power outputs.

Figure 11.

CYW55913 PMU Topology



CYW55913 Carrier M.2 card also includes the RF front end for the Triband WiFi and BT. This section consists of RF switches, BPF and Matching networks that terminates to the UFL antenna connectors.

Figure 12.

CYW55913 RF Section and BT Front end



Figure 13.

CYW55913 RF Front end



The M.2 Carrier Board is interfaced with the Baseboard via the M.2 E-Key standard edge finger connector.

Figure 14.

CYW55913 M2 Interface



Crystals​

The

CYW55913

M.2 carrier module has two crystals onboard, a 37.4 MHz crystal which provides the system reference clock and can operate from an internal high-accuracy (~1%) and a 32.768 kHz low-power oscillator (iLPO) or external 32.76 kHz crystal (eLPO) for higher accuracy or from an external reference clock.

Memory​

CYW955913SCM2WLIPA

M.2 carrier module also includes external memory connected to the

CYW55913

device via the SMIF interface. One QSPI flash is provided on the M.2 carrier board, which is interfaced with

CYW55913

device through an SMIF interface with separate chip select.

Figure 15.

Memory



Baseboard​

CYW9CPM2BASE1 is the baseboard on which the

CYW55913

M.2 carrier module (

CYW955913SCM2WLIPA

) is mounted. The baseboard is interfaced with the M.2 carrier module through the M.2 E-Key connector, and it provides different peripherals and extended connectors to demonstrate the capabilities of the

CYW55913

device.

Serial communication between CYW55913 and PSOC™ 5LP KitProg3​

The onboard CY8C5868LTI-LP039 PSOC™ 5LP device is a true programmable embedded system-on-chip responsible for two-channel USB-serial conversion on this baseboard. The USB-serial pins of the PSOC™ 5LP device are hard-wired to the HCI UART pins of the

CYW55913

device. Also, one peripheral UART from the device also connected to the P5LP device, which can also be accessed via USB.

Mode switch SW3 can be used to switch between single and dual UART modes of operation of KitProg3. The status LED (LED2) indicates the current mode of KitProg3.

This kit supports a special operating mode that allows for two UART connections rather than a single UART plus bridging (USB-I2C or USB-SPI). To enter UARTx2 when the kit is in CMSIS-DAP Bulk or HID mode, press and hold the mode switch for at least two seconds. In UARTx2 mode, the KP3 status LED (LED2) blinks for 1 second at 2 Hz, then stays on for another second. To exit, press and hold the mode switch for at least two seconds. You can return to CMSIS-DAP Bulk mode.

Note: In single UART mode, only HCI UART will be connected to the USB, and for the debug logs, peripheral UART need to be enabled, and KP3 mode needs to be changed to dual-UART mode.

KP3 supports other serial bridges like USB-I2C and USB-SPI, as well as USB-JTAG for debugging. All serial interfaces are connected through Level translators, as the P5LP device supports 5 V and the

CYW55913

device supports 1.8 V.

Note: In KitProg3, 3[5] pin can be used for GPIO bridging. This pin is unidirectional (available signal transmittance only fromCYW55913to KitProg3) and the state of 3[5] pin can only read by kitprog3.

Figure 16.

Serial communication between

CYW55913

and PSOC™ 5LP KitProg3 with level translators



Baseboard power​

The major power supply source to this kit is the USB Type-C connector (J6) with a 20 V overvoltage protection circuit. The kit also has one optional power supply option, 5 V - 12 V DC Jack (J7). These input source sections have transient voltage suppression (TVS-diode) to provide ESD protection for the power source at the connector. The amber power LED is connected to the VCC_3V3 rail through a current-limiting resistor to indicate the board power is ON.

The PSOC™ 5LP (KitProg3) is powered from the KP_VBUS rail with a 0 Ω resistor/jumper in series so that PSOC™ 5LP can be disconnected from the supply rail or used as a current measurement jumper. On the other hand, KP_VBUS also goes to the Arduino header (J1) as VCC_ARD_5V0 through a reverse voltage protection circuit.

The kit has a buck regulator that generates 3.3 V from the input sources, which are combined through ORing diodes. Generated 3.3 V will be used for VBAT supply to the

CYW55913

device through a current measurement jumper (J14). This 3.3 V supply is also fed to one LDO to generate 1.8 V for other peripherals on the baseboard.

5 V and 3.3 V are going to the Arduino headers via reverse voltage protection circuits, and VIOREF voltage going to the Arduino header (J1) can be selected with the jumper configuration on the J20 header.

Figure 17

shows the power architecture of the

CYW955913EVK-01

.

Figure 17.

Power architecture of

CYW955913EVK-01



The schematics of the power supply sections of the kit are provided below.

Figure 18.

USB Type-C connector for power and KitProg3



Figure 19.

20 V protection circuit for USB



Figure 20.

5 V - 12 V DC jack



Figure 21.

Power supply ORing circuit



Figure 22.

Power LED



Figure 23.

3.3 V Buck regulator



Figure 24.

1.8 V LDO



Figure 25.

Reverse voltage protection circuit for Arduino headers



Figure 26.

Reverse protection circuit for connector J9



Device recovery and reset​

CYW955913EVK-01

has one recovery button and a reset button. The recovery button (SW1) connects to the BT_UART_CTS_N pin on the

CYW55913

device, and while pressing the button, this pin is connected to ground and push the device into recovery mode.

SW2 on the kit is the reset button, which is connected to the BT_REG_ON pin of the

CYW55913

device, and once button is pressed, it connects this pin to ground, disables the BT subsystem power supply, and makes the system reset. The BT_REG_ON pin of the device is also connected to the J17 header, and by placing jumper on the same, the BT subsystem can be permanently disabled.

Also, J16 connected to the WL_REG_ON pin of the

CYW55913

,

should be

mounted with the jumper to connect the pin

always

to

ground

.

Figure 27.

Reset and recovery buttons



Figure 28.

WL_REG_ON and BT_REG_ON jumpers



Digital (PDM) microphones​

This kit has two digital mics that are connected to the

CYW55913

device through the PDM interface and can be used for audio record functionalities in stereo mode. The select pin on each microphone is biased such that data is either on a HIGH or LOW of the clock signal. This digital mic is powered from the VCC_PER_1V8 power rail of the kit.

Figure 29.

Digital microphone



Analog microphone​

One analog microphone is also included in this kit to demonstrate the analog audio capability of the

CYW55913

device. Differential output AMIC is interfaced with the

CYW55913

device through the dedicated analog microphone input pin and AGND pin. This AMIC is powered by the VCC_PER_1V8 rail on the kit.

Figure 30.

Analog microphone



Ambient light sensor​

Kit is having a digital ambient light sensor on the baseboard, which is connected to the

CYW55913

device via an I2C interface. The ambient light sensor is powered by the VCC_PER_1V8 power rail on the baseboard, sense the ambient light intensity, and provides data to the

CYW55913

device via an I2C interface.

Figure 31.

Ambient light sensor



User LEDs​

There are two user LEDs on the baseboard that are connected to the GPIOs of the

CYW55913

device. User LED1 is connected to the BT_GPIO_16, and user LED2 is connected to the BT_GPIO_17, and these connections to the LEDs can be isolated using the SW5 switch when the GPIOs are accessed on the Arduino connectors.

LEDs are connected to the device GPIOs, so the GPIOs need to be configured as low for glowing the LEDs.

Figure 32.

User LEDs and isolation switch



User button​

One user-controlled button is available on the kit to provide user-specified inputs. This user button is connected to BT_GPIO_4 of the

CYW55913

device as an active low input.

Figure 33.

User button



Potentiometer​

One Potentiometer is present on the kit and is connected to the ADC-capable pin (LHL_GPIO_8) of the

CYW55913

device that enables the kit to demonstrate the analog capability of the device.

If this GPIO is used for other functionalities on the Arduino header, the potentiometer can be disconnected from the GPIO by removing the jumper from the J10 header.

Figure 34.

Potentiometer



Arduino compatible headers and extended headers​

The baseboard supports generic Arduino-compatible Uno shields and selected Infineon custom-defined Arduino-compatible shields. All

CYW55913

GPIO pins are moved out to Arduino-compatible headers. Some pins with fixed functions are also multiplexed through 0 Ω and connected to headers. The I/O headers J1-J4 whose position and pin map comply with the Arduino-compatible UNO R3 kit to support Arduino-compatible shields.

The system power signals are moved to the pins of J1. The power supply pins for Arduino-compatible VCC_ARD_3V3 and VCC_ARD_5V0 connect to VCC_3V3 and KP_VBUS through reverse voltage protection circuits. All GPIOs of the

CYW55913

device are at 1.8 V, and level translators are used to level shift them to 3.3 V, 5 V to support those voltage levels, and VIOREF voltage can be selected with the jumper position in the J20 header.

Extended headers are also available on the kit and mapped to the TDM interfaces from the

CYW55913

device to support the BT audio functionality.

The SW6 slide switch is used to switch the functionalities of the multiplexed GPIOs LHL_GPIO_8 and LHL_GPIO_9.

Figure 35.

Arduino and extended headers



CYW55913

device have three Serial Communication Blocks (SCBs) supports three serial communication protocols: SPI, UART, and I2C. Only one of the protocols is supported by an SCB at any given time.

In

CYW955913EVK-01

, SPI interface to the Arduino header J3 and the Peripheral UART available on the USB connector(J6) uses the same SCB block (SCB1). So only one of them can be accessed at any given time.

Figure 36.

GPIO level translators for Arduino headers



Figure 37.

I2C level translator



Figure 38.

Multiplex switch for LHL_GPIO



M.2 connector for CYW55913 carrier module​

The M.2 E-Key standard connector (J13) is used to interface the

CYW55913

M.2 carrier module to the baseboard. This connector brings out all major interfaces like HCI UART, SDIO, TDM, and GPIOs from the device.

One external LPO option is provided on the baseboard, which is connected to the pin-50 of M.2 connector to provide 32.768 kHz clock to the M.2 carrier module.

Figure 39.

M.2 E-Key connector



External host interface connector​

To interface the

CYW55913

device to other external host platforms, one external host interface is added on the kit, which maps all the major interfaces from the device. One 30-pin FFC cable with FFC to M.2 adapter card enables the user to interface the

CYW55913

carrier module to external host platforms.

Figure 40.

External host interface connector



Figure 41.

Host interface connection to external host platform



JTAG connector​

Connector J9 on the baseboard maps the WL GPIOs from the

CYW55913

device, which functions as the JTAG/COEX pins from the device. By default, this connector path is not mounted. See the

Kit reworks

chapter for the rework required to enable this path.

Figure 42.

JTAG connector



UART connector​

To enable UART programming from an external source, the baseboard has one 6-pin header (J22), which is not mount by default. It maps the HCI UART pins from the

CYW55913

device with level translated to 3.3 V.

For details of the rework required to enable this path, see the

Kit reworks

chapter.

Figure 43.

UART programming header



CYW55913device I/O mapping​

Table 17

gives the detailed I/O mapping of

CYW55913

device and how it is connected to the peripherals and connectors on the baseboard. Baseboard connection 1 in the table defines the default configuration, and for other connection to enable, reworks may be required. See the

Kit reworks

chapter for more details.

Table 17.

CYW55913

device I/O mapping

M.2 carrier module pin

M.2 carrier module pin name

CYW55913

pin

Baseboard connection 1 (Default)

Baseboard connection 2

Baseboard connection 3

1

GND

GND

GND

–

–

2

VBAT_M2

ASR_VDDBAT WLLDO_VDDBAT BTLDO_VDDBAT

VCC_3V3

–

–

3

BT_GPIO_2

BT_GPIO_2

ARD_D9

ARD_D8

ALS_INT

4

VBAT_M2

ASR_VDDBAT WLLDO_VDDBAT BTLDO_VDDBAT

VCC_3V3

–

–

5

BT_GPIO_5

BT_GPIO_5

ARD_D7/VOL

–

–

6

BT_GPIO_16

BT_GPIO_16

USER_LED1

D10/SPI_CS

–

7

GND

GND

GND

–

–

8

TDM2_SCK

TDM2_SCK

ARD_TDM2_SCK

EX_TDM2_SCK

–

9

SDIO_CLK

SDIO_CLK

gSPI_SCLK

EXT_SDIO_CLK

–

10

TDM2_WS

TDM2_WS

ARD_TDM2_WS

EX_TDM2_WS

–

11

SDIO_CMD

SDIO_CMD

gSPI_MOSI

EXT_SDIO_CMD

–

12

TDM2_DO

TDM2_DO

ARD_TDM2_DO

EX_TDM2_DO

–

13

SDIO_DATA_0

SDIO_DATA_0

gSPI_MISO

EXT_SDIO_DATA0

–

14

TDM2_DI

TDM2_DI

ARD_TDM2_DI

EX_TDM2_DI

–

15

SDIO_DATA_1

SDIO_DATA_1

gSPI_IRQ

EXT_SDIO_DATA1

–

16

BT_GPIO_17

BT_GPIO_17

USER_LED2

D13/SPI_CLK

–

17

SDIO_DATA_2

SDIO_DATA_2

GND

EXT_SDIO_DATA2

–

18

GND

GND

GND

–

–

19

SDIO_DATA_3

SDIO_DATA_3

gSPI_CS

EXT_SDIO_DATA3

–

20

BT_HOST_WAKE_M2

BT_HOST_WAKE

J21.17

–

–

21

GPIO0_WL_HOST_WAKE_M2

GPIO0_WL_HOST_WAKE

J21.18

–

–

22

BT_UART_TXD

BT_UART_TXD

KP3_BT_RX

EX_BT_UART_TXD

J22.5

23

TDM1_WS

TDM1_WS

J5.8

–

–

32

BT_UART_RXD

BT_UART_RXD

KP3_BT_TX

EX_BT_UART_RXD

J22.4

33

GND

GND

GND

–

–

34

BT_UART_RTS_N

BT_UART_RTS_N

KP3_BT_CTS

EX_BT_UART_RTS

J22.2

35

TDM1_MCK

TDM1_MCK

J5.2

–

–

36

BT_UART_CTS_N

BT_UART_CTS_N

SW1

KP3_BT_RTS

EX_BT_UART_CTS, J22.6

37

TDM1_SCK

TDM1_SCK

J5.5

–

–

38

GPIO5_WL_JTAG_TDO

GPIO5_WL_JTAG_TDO

KP3_TDO

J9.6

–

39

GND

GND

GND

–

–

40

GPIO4_WL_JTAG_TDI

GPIO4_WL_JTAG_TDI

KP3_TDI

J9.8

–

41

TDM1_DI

TDM1_DI

J5.6

–

–

42

BT_DEV_WAKE_M2

BT_DEV_WAKE_M2

J5.4

J21.10

–

43

TDM1_DO

TDM1_DO

J5.7

–

–

44

GPIO6_WL_JTAG_TRST

GPIO6_WL_JTAG_TRST

KP3_TRST

J9.10

–

45

GND

GND

GND

–

–

46

GPIO2_WL_JTAG_TCK

GPIO2_WL_JTAG_TCK

KP3_TCLK

J9.4

–

47

AMIC_P

MIC_P

AMIC_P

–

–

48

GPIO3_WL_JTAG_TMS

GPIO3_WL_JTAG_TMS

KP3_TMS

J9.2

–

49

BT_GPIO_0

BT_GPIO_0

ARD_D6/nIRQ

–

–

50

eLPO_M2

LPO_IN_OUT

eLPO_M2

–

–

51

GND

GND

GND

–

–

52

TDM2_MCK

TDM2_MCK

ARD_TDM2_MCK

–

–

53

DMIC_DATA

DMIC_DQ

DMIC_DATA

–

–

54

BT_REG_ON_M2

BT_REG_ON

SW2

J17.1

J21.8

55

DMIC_CLK

DMIC_CK

DMIC_CLK

–

–

56

WL_REG_ON_M2

NC

J16.1

J21.7

–

57

GND

GND

GND

–

–

58

BT_GPIO_6

BT_GPIO_6

KP3_SDA

ARD_SDA

J21.6

59

LHL_GPIO_9

LHL_GPIO_9

D12/SPI_MISO

ARD_A3

–

60

BT_GPIO_7

BT_GPIO_7

KP3_SCL

ARD_SCL

J21.5

61

LHL_GPIO_8

LHL_GPIO_8

Potentiometer

D11/SPI_MOSI

ARD_A2

62

LHL_GPIO_5

LHL_GPIO_5

ARD_A1

KP3_UART_CTS

EX_LHL_GPIO_5/UART_RTS

63

GND

GND

GND

–

–

64

LHL_GPIO_4

LHL_GPIO_4

ARD_A0

KP3_UART_RTS

–

65

NC

NA

–

–

–

66

WL_DEV_WAKE_M2

WL_DEV_WAKE

J5.3

J21.3

–

67

LHL_GPIO_6

LHL_GPIO_6

ARD_D5/CUSTOM

–

–

68

LHL_GPIO_2

LHL_GPIO_2

KP3_UART_RXD

D1/ARD_UART_TXD

EX_LHL_GPIO_2/UART_TXD

69

GND

GND

GND

–

–

70

LHL_GPIO_3

LHL_GPIO_3

KP3_UART_TXD

D1/ARD_UART_RXD

EX_LHL_GPIO_3/UART_RXD

71

BT_GPIO_3

BT_GPIO_3

ARD_D2

ARD_D3

–

72

VBAT_M2

ASR_VDDBAT WLLDO_VDDBAT BTLDO_VDDBAT

VCC_3V3

–

–

73

BT_GPIO_4

BT_GPIO_4

USER_BUTTON

ARD_D4/VOL+

–

74

VBAT_M2

ASR_VDDBAT WLLDO_VDDBAT BTLDO_VDDBAT

VCC_3V3

–

–

75

GND

GND

GND

–

–

Kit reworks​

This section provides details about the reworks required to enable the sections in the kit hardware that are not available by default.

JTAG connector mounting​

To enable the JTAG/COEX access from the kit, you need to mount the J9 connector and resistors R211, R212, R213, and R214 to connect the

CYW55913

device GPIOs to J9 and need to isolate the connection to the KP3 by removing resistors R210, R216, R217, and R218.

Figure 44.

JTAG connector rework



UART connector mounting​

To enable the external UART programming, you need to mount the J22 connector and level translator (U24), which is not mounted by default. The path to the connector from

CYW55913

can be enabled by mounting R219, R220, R221, and R222 resistors and removing the connections R137, R139, R141, and R142 resistors.

Figure 45.

UART connector rework



CYW55913 device pin multiplex options​

CYW55913

device major interfaces can be switched to the external host interface or Arduino header by mounting the series resistor in the path between the device and the external connector or to the Arduino header in the multiplex options.

Figure 46.

External host interface resistor mount options



Figure 47.

SDIO interface external host interface connect option



Revision history​

Document version

Date of release

Description of changes

**

2023-09-29

  • Initial release

*A

2024-03-21

*B

2024-09-12